Dellavedova, 24, filled in admirably for an injured Kyrie Irving during the postseason and helped the Cavs reach the NBA Finals.

The scrappy guard will become an unrestricted free agent next summer:

Another motivation for the timing of the deal, a source said, is that Dellavedova wanted to get his contract situation resolved before competing for his home country of Australia in the FIBA Oceania Championship next month.

Dellavedova, who will turn 25 in September, averaged 4.8 points and 3.0 assists while shooting 40.7 percent from 3-point range during the regular season. He also averaged 7.2 points and 2.7 assists in the postseason, punctuated by a memorable 19 points in a series-clinching win in Chicago in the second round and 20 points in the Cavs’ Game 3 win over Golden State to go up 2-1 in the Finals.

Talks between the Cavs and two other key members of last season’s Eastern Conference champion squad, Tristan Thompson and J.R. Smith, remain ongoing.